Blue fibrous material and process of dyeing same.



Application filedfebru To (all whom it UMZZ/ suite-aria:

Be it known that I, Vim-0e Ph. D., chemist, a ei' en Austrieliungery,res Main, Germany, have in. and useful hnprovemelns in Dyeing Blue, ofwhich the specification,

I have found that by e: 'zing e in of alkylated dianiidobenzhyoiels endi oXy or para-amide dipheuylemin 21y derivatives new dyestufis of vividhim be obthined which are d inguished by t fastness to Washing, so soda,elkeli and acid even in the absence 0 i i It is known thattetren'iethyidiei zhydrol with acids yields beeutuu tinted salt-sdeeoiorized by an excess L1). e On tannin-mordented cotton. or si 3salts produce beautiful shades ness, however, and being re posed bysoap, dilute alkali. (Compare Nietzki, One m. HI edition, pages iii.)stuffs obtained by this YIOL" w, must not be mistaken for the known ,1-the aikyleted (iliil'llidObGIlZlIFClIOiS question here of neweondensetieri II tetramethyldiemidobenzhy oxidized, no dyestufi is bdizing gem-oily or pare-amide d it by ltse e lwht grey 1s pee-d2 ever,the hydrol be mixer diphenvlsmin derivative din color and oxidized on tstugs of beautiful shades m ness are obtained. in e simiis in thederivatives of pareor y e1 diphenylemin-lihefm insten ee,pare-oxy-diphenyiamin, fHLlTlliFtBLm nylemin and their homolegues wimethyldiamidobenzhydrol and of! l lyted diemidobenzhydrols. The corr111g methane derivatives, like tetra. i anudodlphenylmetheme, whenoxidized on the fiber together with para emidoc ipheiiylemin also yielda blue dyestuil of the sat-in e excellent properties. This is due prob bl to the hydrol being first formed 7 the methane derivative, whereuponit; with p era-amidediphenylemin. Thus stance, ara-oxydiphenylemin andtet methyldiamldobenzhydi'ol yield e vivid vie- "is min and v I Mtetrathe stL l The bodies to be a "products of the (TJ'DliCELlJlOIi ZOO

